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8 vhf digital selective calling, 0 dsc distress call, Digital selective callin – Standard Horizon CP500 User Manual

Page 67: Position request, Position send

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CP500

Page 69

2. Move the ShuttlePoint knob to highlight DATA and press [ENT].
3. Connect the BLUE Wire on the GPS Chart Plotter to the junction of the Brown wire and

the VHF wire. The display should look similar to the picture below.

Figure 12.6 - NMEA Data page

12.7 NMEA DEPTH, WIND SPEED, TEMP AND SOG TREND PAGES

When the GPS Chart Plotter is connected to the Optional FF520 50/200kHz BLACK BOX
FISH FINDER or a Digital Depth Sounder, Wind Speed/Direction, Speed Log with Temp with
NMEA output the GPS Chart Plotter is capable of show Trends in the data from the device.
To select a NMEA Trend Page:
1a. Press [MENU]. Move the ShuttlePoint knob to highlight NMEA DISPLAY and press

[ENT]. Move the ShuttlePoint knob to highlight DEPTH TREND/WIND SPEED TREND/
TEMP TREND/SOG TREND and press [ENT].

12.8 VHF DIGITAL SELECTIVE CALLING

Digital Selective Calling is a semi-automated method of establishing a VHF radio call. DSC
had also been designated as part of the Global Maritime Distress and Safety System
(GMDSS). It is planned that DSC will eventually replace aural watches on distress
frequencies and will be used to announce routine and urgent maritime safety information
broadcasts.
This new system allow mariners to instantly send a distress call with GPS position (when
connected to the transceiver) to the US Coast Guard and other vessels within range of the
transmission. DSC will also allow mariners to initiate POSITION Request, POSITION Send
calls to or from another vessel equipped with a DSC transceiver.

STANDARD HORIZON VHF Marine Radios with Digital Selective Calling are able to be
interfaced with the GPS Chart Plotter which feeds GPS data to the VHF and listens for DSC
calls from the VHF. By connecting a few wires between the STANDARD HORIZON VHF and
the GPS Chart Plotter it will receive:
1. a vessel that has transmitted a DSC Distress call
2. a vessel that has transmitted a DSC Position Send Call
3. The position of a vessel that transmitted a DSC Position Request Call

12.8.0 DSC Distress Call

During a Distress situation, a vessel that is equipped with a DSC VHF and connected to a